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== Riferimenti Esterni ==
== Riferimenti Esterni ==
* http://www.getty.edu/conservation/publications_resources/pdf_publications/ethers.pdf Sulla degradazione della celluloide
* [http://www.getty.edu/conservation/publications_resources/pdf_publications/cellulose_ethers.html Evaluation of Cellulose Ethers for Conservation]
* [http://pickcollecting.presspublisher.us/issue/summer-2010/article/pick-degradation Sulla degradazione dei plettri]
* [http://pickcollecting.presspublisher.us/issue/summer-2010/article/pick-degradation Sulla degradazione dei plettri]
* [http://cool.conservation-us.org/jaic/articles/jaic30-02-003_3.html CELLULOID OBJECTS: THEIR CHEMISTRY AND PRESERVATION]
* [http://cool.conservation-us.org/jaic/articles/jaic30-02-003_3.html CELLULOID OBJECTS: THEIR CHEMISTRY AND PRESERVATION]